Design, Fabrication and Testing of a 15-kW Gas-Fired Liquid-Metal Evaporator 929177
This paper describes the development and testing of a compact heat-pipe heat exchanger that is designed to transfer thermal energy from hot combustion gases to the heater tubes of a 25-kWe Stirling engine. In this system, sodium evaporates from a surface that is heated by a stream of hot gases and the liquid metal then condenses on the heater tubes of a Stirling engine where energy is transferred to the engine's helium working fluid. Recent tests on a prototype unit illustrated that a compact (8 cm x 13 cm x 16 cm) sodium evaporator can routinely transfer 15-kWt of energy at an operating vapor temperature of 760°C. Four of these prototype units will eventually be used to power a 25-kWe Stirling engine system. Design details and test results from the prototype unit are presented in this paper.
Citation: Adkins, D. and Rawlinson, K., "Design, Fabrication and Testing of a 15-kW Gas-Fired Liquid-Metal Evaporator," SAE Technical Paper 929177, 1992, https://doi.org/10.4271/929177. Download Citation
Author(s):
Douglas R. Adkins, K. Scott Rawlinson
Affiliated:
Sandia National Lab.
Pages: 9
Event:
27th Intersociety Energy Conversion Engineering Conference (1992)
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Stirling engines
Heat exchangers
Combustion and combustion processes
Sodium
Gases
Metals
Fabrication
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